CVE-2026-77128Network attack vector

Restricted-event disclosure via demand-override authorization bypass

Published Aug 25, 2026 · Updated Aug 25, 2026

Broken access control in TYPO3 Event Management and Registration allows remote attackers to view hidden or time-restricted events. The event repository accepts a demand-override query parameter without applying TYPO3 enable-field restrictions to the resulting lookup. Unauthenticated network access is sufficient when disableOverrideDemand is not enabled; the documented consequence is disclosure of restricted event records.

CVSS severity6.3
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Broken access control in TYPO3 Event Management and Registration allows remote attackers to view hidden or time-restricted events. The event repository accepts a demand-override query parameter without applying TYPO3 enable-field restrictions to the resulting lookup. Unauthenticated network access is sufficient when disableOverrideDemand is not enabled; the documented consequence is disclosure of restricted event records.

The record

CVE
CVE-2026-77128
Published
Aug 25, 2026
Updated
Aug 25, 2026
Vendor
in2code GmbH
Product
Event Management and Registration
Classifications
CWE-862, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <5.9.3
  2. Affected versionversion=6.0.0 <6.7.2
  3. Affected versionversion=7.0.0 <7.9.3
  4. Affected versionversion=8.0.0 <8.6.2
  5. Affected versionversion=9.0.0 <9.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

in2code GmbH · Event Management and Registrationversion=0 <5.9.3; version=6.0.0 <6.7.2; version=7.0.0 <7.9.3; version=8.0.0 <8.6.2; version=9.0.0 <9.0.3

Published CVSS scores

6.3TYPO3CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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